Medical and Hospital Liability

Overview

A patient whose condition deteriorates after treatment must distinguish the underlying illness, the inherent risks of appropriate care, and injury caused by a professional or institutional failure. The same episode can involve a physician's clinical judgment, a nurse's surveillance, and an institution's arrangements for communicating abnormal results. Each alleged fault (faute) requires an identified duty, evidence of its breach, and a causal connection with the injury (préjudice) claimed.

The Civil Code of Quebec (Code civil du Québec, CCQ) supplies the general framework. Medical expertise helps establish acceptable practice and explain what happened, but the court decides civil liability. Professional discipline and hospital complaints serve different purposes and do not themselves establish an entitlement to damages. This lesson concerns the general framework common to medical and hospital claims.

Learning Objectives

• Determine the applicable liability regime and the intensity of the particular obligation involved.
• Apply the rules governing clinical care, informed consent, and proof of causation without importing common-law tests into Quebec law.
• Allocate personal, institutional, and derivative liability among the participants in a course of care.

The Relationship and the Standard of Care

Identifying the Applicable Regime

Contractual liability (responsabilité contractuelle) commonly governs care accepted by a physician for an individual patient. X c. Mellen, [1957] B.R. 389, illustrates recognition of a medical contract through the consultation relationship. Its existence depends on the parties' dealings; crossing an office threshold is not a substitute for examining whether care was actually undertaken. Article 1458 CCQ governs failure to perform the contractual obligation and prevents the parties from choosing the extra-contractual regime simply because its rules would be more favourable.

Extra-contractual liability (responsabilité extracontractuelle), under art. 1457 CCQ, applies where the relevant undertaking does not arise from a contract. Emergency treatment of an unconscious patient without a pre-existing agreement is an example. A pathologist who never meets the patient and receives work through departmental allocation may also lack a personalized contractual relationship. Consent to the physical intervention and consent to a contract answer different questions: valid substituted consent to care does not by itself establish who contracted with whom.

For hospitals, the prevailing approach to medical services is extra-contractual. Hôpital de l'Enfant-Jésus c. Camden-Bourgault, [2001] R.J.Q. 832 (C.A.), rejected contractual liability of the institution for the physician's medical fault and the proposed relationship of subordination in that context. The decision does not eliminate the institution's own duties or its responsibility for employees. Contracts may still matter for particular ancillary services, including accommodation. Separate obligations can coexist, but their classification must be tied to the specific alleged breach; a patient cannot combine whichever rules are most advantageous.

Measuring Professional Conduct

The physician ordinarily owes an obligation of means (obligation de moyens). The comparison is with a reasonably prudent, diligent, and competent physician practising in the relevant field, at the time of treatment and in comparable circumstances. The court considers available knowledge, urgency, reasonably accessible information, and specialization. A general practitioner who undertakes specialist treatment may be assessed against the competence that treatment requires. An adverse result does not retrospectively make an otherwise reasonable decision faulty.

An obligation of result (obligation de résultat) may attach to a specifically promised result or certain distinct services, such as the functioning of equipment that causes injury by itself. It should not extend to treatment success as a whole. A prohibited promise of a cure may have civil consequences, but professional rules do not permit physicians to guarantee recovery. Handling an instrument, subject to human judgment and therapeutic uncertainty, must also be distinguished from its autonomous malfunction.

In St-Jean c. Mercier, 2002 CSC 15, the Supreme Court explains judicial neutrality between competing but accepted medical approaches. A court does not impose its preferred treatment where both approaches fall within reasonable practice. It nevertheless assesses the credibility, impartiality, and factual foundation of expert opinions. Producing a defence expert does not establish that the disputed conduct was acceptable.

Diagnosis, Treatment, and Follow-up

A diagnostic error becomes a civil fault when the process falls below reasonable professional care. The physician must obtain a sufficient history, examine appropriately, consult relevant records, and order investigations or obtain a specialist opinion when required. The duty does not require every conceivable test. It requires a reasoned response to the signs present and to diagnoses that should reasonably be considered. A rare condition or emergency informs the assessment without automatically excusing failure to investigate serious warning signs.

Treatment must be suitable, performed competently, and adjusted to the patient's response. A physician cannot mechanically adopt an earlier diagnosis when new findings call it into question. Referral becomes necessary when care exceeds the physician's competence. Accepted practice is evidence of prudence, although a customary method must itself withstand evaluation as reasonable practice. Experimental possibilities do not automatically establish the standard applicable to ordinary care.

Follow-up includes reviewing investigation results, communicating significant findings, arranging reassessment, and giving usable instructions about warning signs. Ordering a test without ensuring an appropriate system for dealing with its result can leave the therapeutic undertaking unperformed. An absent physician must make reasonable arrangements for continuity. A genuine transfer, after another physician takes charge, differs from temporarily introducing a substitute to perform an existing contractual undertaking; the former physician is not automatically responsible for everything the successor later does.

Nursing care carries its own professional standard. Monitoring vital signs, administering medication, recording changes, alerting the physician, and following up an unanswered call involve professional judgment. A nurse may ordinarily rely on an appropriate prescription, but that reliance does not remove a duty to question an evident anomaly within nursing competence. Conversely, an unexplained bad result does not establish that a nurse should have detected a specialist medical error.

The patient must cooperate by giving relevant information, attending necessary follow-up, and responding reasonably to clear instructions. A failure matters only insofar as it contributes to the injury or its aggravation. The physician's continuing responsibilities cannot be transferred wholesale to the patient through a vague instruction to return if needed.

Information and Consent

Disclosure and Understanding

Informed consent (consentement éclairé) protects autonomy and bodily integrity under art. 10 and art. 11 CCQ. Before examination or treatment, the physician must explain the diagnosis, purpose and nature of the intervention, reasonable alternatives, and material consequences. Where appropriate, alternatives include declining intervention. Purely hypothetical treatments need not be presented as available options. Disclosure must be intelligible: explanations should reflect the patient's language, understanding, questions, and known circumstances, with reasonable steps to check comprehension.

Disclosure depends on both the probability of a risk and the seriousness of its consequences for this patient. A rare risk can require disclosure when grave; an inherent risk is not exempt merely because competent treatment cannot eliminate it. The duty is more extensive for elective or cosmetic interventions, where the patient may readily forgo the benefit. Unpredictable risks and insignificant inconveniences should not be equated with rare but serious known complications.

A signature supports proof of the conversation but cannot replace it. Article 24 CCQ requires written consent to care not required by the patient's state of health, subject to its particular provisions concerning research. The statutory requirement should not be dismissed merely because oral information can be proved. Consent remains revocable, including verbally, and developments that substantially change the intervention require reconsideration of its scope.

Under art. 13 CCQ, urgency dispenses with consent only when life is endangered or integrity threatened and consent cannot be obtained in time. Consent remains necessary for unusual or futile care or where its consequences could be intolerable for the person. Therapeutic privilege (privilège thérapeutique) is a separate, exceptional restriction on disclosure for required care where disclosure itself risks significant harm. An expectation that the patient might refuse beneficial treatment does not suffice.

Marcoux c. Bouchard, 2001 CSC 50, distinguishes the main participants in surgery, whose identity matters to consent, from customary assistants. It does not authorize undisclosed delegation of a major intervention to a trainee. The university setting and the wording of a form are relevant facts, but neither supplies unlimited permission to substitute operators or perform additional procedures.

Consent Causation in Quebec

An informational fault does not automatically make the physician answer for every consequence of treatment. For injury resulting from the intervention, the patient must establish that adequate information would have changed their decision and that this different course would have avoided the injury claimed. The inquiry concerns this patient's decision. Quebec's approach, often called rational subjectivity, is subjective in substance. The court may compare testimony with reasonable behaviour to evaluate credibility; this evidentiary safeguard does not replace the patient with a hypothetical reasonable person.

Earlier statements, personal priorities, prior refusals, questions, and conduct around the intervention can corroborate the patient's account. Necessity, urgency, and the consequences of refusing care also inform its credibility. The modified objective test associated with common-law consent litigation must therefore not be treated as Quebec's governing test. A technically flawless intervention can produce compensable injury through defective consent, provided the causal requirements are proved.

Worked Example: An Undisclosed Risk

Factual Scenario

This example is hypothetical.

A patient requests an elective procedure and repeatedly states that preserving fine hand movement is essential to their work. The physician omits a rare but serious risk of permanent loss of dexterity, which materializes despite competent surgery.

Proving Fault, Causation, and Injury

The patient ordinarily bears the burden of proving fault, injury, and causation (lien de causalité) on a balance of probabilities: art. 2803 and art. 2804 CCQ. Expertise is usually necessary to explain clinical standards and the likely course without the fault, although matters within ordinary understanding may be proved otherwise. Scientific certainty is unnecessary. Statistics assist the analysis but do not establish an individual patient's outcome without considering the rest of the evidence.

A presumption of fact (présomption de fait), under art. 2849 CCQ, can establish fault or causation from serious, precise, and concordant circumstances. An unusual postoperative injury may support an inference when evidence makes faulty conduct its probable explanation. The sequence “healthy before, injured after” is insufficient by itself, especially when competent care can produce the complication. The expression res ipsa loquitur does not create an independent Quebec medical-liability regime or an automatic reversal of the burden.

Benhaim c. St-Germain, 2016 CSC 48, confirms that an adverse causal inference remains discretionary even where the defendant's fault has made causation harder to prove. The court assesses all the evidence, including the parties' relative ability to produce it. St-Jean c. Mercier also rejects treating creation of a risk, followed by injury within that risk, as a substitute for proof of causation. Fault and causation remain distinct issues.

In Laferrière c. Lawson, [1991] 1 R.C.S. 541, the Supreme Court rejected medical loss-of-chance reasoning used to bypass failure to prove that the fault caused the ultimate injury. A claim for a percentage of an unproved chance of cure is therefore not a general fallback. Additional suffering, anxiety, or reduced quality of life actually caused by delayed diagnosis may nevertheless be recoverable, even if timely treatment would not probably have prevented death. That injury must be proved distinctly from the natural consequences of the illness.

Confidentiality and the Medical Record

Professional secrecy (secret professionnel) is protected by s. 9 of the Quebec Charter of human rights and freedoms. It covers both the patient's disclosures and information learned through examination, including the fact that the person sought care. The physician must take reasonable measures to preserve confidentiality among collaborators and when using information technology. Family membership does not itself authorize access to another person's confidential information.

Disclosure requires patient authorization or a legally recognized exception. Statutory reporting duties and narrowly framed safety exceptions must be examined on their own conditions; a general assertion that disclosure would be helpful is insufficient. Litigation does not turn the entire medical history into freely available information. The scope of any waiver and the relevance of the information remain material. The Act respecting health and social services information now forms part of the legislative framework governing information held by bodies within its scope. Official legislation.

Clear records support continuity and proof: symptoms, instructions, discussions, decisions, notifications, and responses should be documented. A missing note is a factual difficulty to assess in context, rather than conclusive proof that an act was omitted. Clinical records must also be distinguished from specially protected material generated through complaints or risk-management processes.

Responsibility Within the Care Team

Nurses, Residents, and Independent Physicians

Under art. 1463 CCQ, derivative extra-contractual liability requires a relationship of subordination (lien de préposition), an employee's fault, and its commission in the performance of assigned functions. The principal can be liable despite having personally exercised care. Nursing staff ordinarily engage the institution's responsibility for their nursing functions. They remain personally answerable for their own faults; employment is not civil immunity.

Actual control over the particular act matters. Assisting a physician or receiving a prescription does not automatically transfer a nurse to the physician as temporary principal. Thomassin c. Hôpital de Chicoutimi, [1990] R.J.Q. 2275 (C.S.), affirmed in Hôpital de Chicoutimi c. Battikha, [1997] R.J.Q. 2121 (C.A.), illustrates a surgeon's entitlement, in its circumstances, to rely on a count entrusted to nursing staff under an institutional protocol. Leading the operation does not make the surgeon answer for everything occurring in the operating room.

A supervising physician may personally err by delegating beyond a resident's competence, failing to supervise appropriately, or disregarding a warning. Responsibility for the resident's own fault requires a separate analysis. For a delegated act within the physician's contractual undertaking, the physician may answer for the person used to perform it without proof of subordination. Outside contract, art. 1463 CCQ supplies the relevant conditions. Routine hospital surveillance must be distinguished from a medical act undertaken under the supervisor's authority.

Independent specialists ordinarily answer for their respective fields. Consultation or team membership alone does not make one physician the guarantor of another. Personal failures of coordination can engage several participants, and contractual responsibility may arise where a physician introduces another person to perform the physician's own obligation. Identify the undertaking and delegation rather than presuming every replacement or consultant falls into the same category.

Worked Example: Delayed Postoperative Intervention

Factual Scenario

This example is hypothetical.

A nurse records deteriorating vital signs but omits the required call to the physician. The ward has also left unclear who must respond when the on-call physician is unavailable. The patient sustains an injury whose connection to the delay is disputed.

Hospital Organization and Statutory Limits

Institutional liability (responsabilité institutionnelle) concerns safe premises and equipment, competent staffing, reasonable organization, continuity, and systems conveying information to those able to act. The institution must respond appropriately to known risks, including foreseeable falls, self-harm, and infection. These duties generally require reasonable precautions in light of the patient, service, and available resources. Neither a hospital-acquired infection nor a suicide automatically proves a breach. Medical independence does not excuse a proven organizational fault.

The Act respecting the governance of the health and social services system now establishes Santé Québec as a legal person and organizes its services through public institutions. Sections 6 and 24 address territorial exclusions and legal personality; s. 19 preserves fault-based recourse and prohibits waiver. Identify the responsible entity and transitional rules for the date of care, rather than automatically suing an historical hospital corporation. The restructuring alone does not establish subordination for every medical act. Official Act, consolidated to 7 April 2026.

Article 1474 CCQ prevents exclusion or limitation of liability for bodily or moral injury. Specific statutory protections remain distinct: s. 734 of the governance Act protects designated participants acting in good faith in the complaints process, within their statutory functions. It is not immunity for the underlying negligent treatment. Governance Act.

Public compensation schemes must also be checked. Section 31 of the Act respecting industrial accidents and occupational diseases can cover injury arising through care for an employment injury or its omission. Section 442 expressly excepts a health professional within the statutory definition who is responsible for such an injury from the employee or mandatary bar it otherwise creates. Coverage must therefore not be equated with blanket medical immunity; statutory recourse and compensation rules require separate examination. Official Act.

Practice Checklist

• Identify every provider, the institution's responsible legal entity, and the law applicable on the date of care.
• Classify each obligation and distinguish clinical uncertainty from a proven departure from reasonable practice.
• Reconstruct diagnosis, treatment, surveillance, communications, and follow-up from the complete evidence.
• Assess intelligibility and disclosure of serious rare risks, alternatives, and material delegation.
• Prove what this patient would have decided with adequate information and whether that course would have avoided the injury.
• Assess presumptions from all established facts without automatically reversing the burden of proof.
• Separate personal fault, institutional fault, and responsibility for another person's act.
• Identify additional injury caused by the fault, confidentiality restrictions, and applicable statutory compensation or immunity rules.